Usually there are disclaimers that the user has to accept or that are listed somewhere in the details of the service in question. I suggest that you carefully read over any details pertaining to that particular company's privacy policy. Although some do not SELL your personal information, most that do not provide a symbol of security such as paypal for example, therefore it is the users choice to provide any or all personal data. Although contacting a supervisor is an action that can be taken, keep in mind that there might be a 'loop-hole' that they may attempt to find in order to avoid being held accountable for that which you are accusing them of doing.

Weegy: Information rights
Good information handling provides a range of benefits as well as helping you to comply with the Data Protection and Freedom of Information Acts. [ We have produced guidance for senior managers about taking a positive approach to information rights.
Data protection – looking after the information you hold
If you hold and process information about your clients, employees or suppliers, you are legally obliged to protect that information. Under the Data Protection Act, you must:
only collect information that you need for a specific purpose;
keep it secure;
ensure it is relevant and up to date;
only hold as much as you need, and only for as long as you need it; and
allow the subject of the information to see it on request.
Good information handling makes good business sense, and provides a range of benefits. You'll enhance your business' reputation, increase customer and employee confidence, and by ensuring that the information is accurate, save both time and money. ] (More)